Elchaed vose



(No Model.)

R. VOSB.

GAP. SPRING.

No.. 351.819. Patent-ed Nov.' 2v, 1886.

. fiwejza UNITED STATES PATENT OFFICE.

Riemann vosE, or NEW YORK, N. Y.

CAR-SPRING.

SPECIFICATION forming part ot'- Letters Patent No. 351,819, datedNovember 2, 1886.

l Application nien october is. tesi. serial No. 145,589. (No model.)

To atZZY whom, it may concern:

Beit known that I, RICHARD VosE, a citi-- zen ofthe United States, andaresident of the city, county, and State ot' New York, have inv ventedcertain new and usefull Improvements in Car-Springs, of whichthefollowing, taken in connection with the accompanying draw ings, is aspecification.

`My invention relates tothat class 'of car-l zo it was supported andheld at its base in proper' relation thereto by being tted'within thesame its upper end, which was of smaller diameter, was not sosupportechand hence in operation was liable to move laterally across itsaxes and occasion frequent breakagesof said coil. 4

The object of my inlvention is to obviate this defect and produceaspring of the class mentioned, in which the interior coil shall be ot'.30 substantially the same length ,as the exterior coil, and in whichboth coils shall be held from lateral movement with respect to eachother at both their upper and lower ends.

To this end my invention consists in the combination, with a cylindricalspiral coil, of

a conical coil ofsubstantially the same length as the cylindrical coil,arranged within the same, and in various `other combinations andarrangements of parts, as hereinafter'described, 4o and particularlypointed out in the subjoined claims. Y

Referring to the accompanying drawings for a better understanding of myinvention, A and B are the outer and inner spiral coils, respectively,the former of which is cylindrical and the latter conical in form. Thesecoils are constructed of such dimensions that the exterior of the baseof the conical coil snugly fits the interior of rthe cylindrical coil,and 5o both rest upon the base-plate E, which is provided ata `suitabledistance from its center With an upwardly-projecting flange, b, thatenters the interior of the base of the inner coil and is claspedthereby. Resting upon the upper end of these coils, which are ofsubstantially the samelength, is thc top plate or cap, D, having thedepending circular flange d cast or otherwise formed on its under side.This flange is of suoli diameter and thickness in crosslsection that itsexterior surface snugly lits the interior of the outer coil and itsinterior surface the exterior ofthe upper end of the inner coil, so thatwhen the top plate orcap is in position upon theV coils it projects downbetween them and holds them in proper position respecting each other. Inthe center-ot' both the top plate or cap, D, and the baseplate E isformed a suitable aperture, through which and the inner coil may bepassed, if desired, a bolt, by which means and a nut the top plate orcap and the base-plate may be held tightly upon the coils. p

By the construction of parts thus described I am able to use .not only aconical and a cylindrical coil in connection which shall be ofsubstantially the same length, with the former arranged within thelatter, but also to provide means whereby their ends may be held inproper relation with respect to each other, without capability oflateral movement, and produce a spring which shall be simple inconstruction and reliable in operation.

I have shown the outer coil, A, as constructed ot' a larger Arod thanthe coil, B, and hence capable of withstanding a greater pressure thanthe latter; but it is tobe understood that I do not limit myselfthereto, as it is obvious that I may reverse this order and make theinterior coil of the larger rod, if I so desire. Neither do I limitmyself to the particulararrangement of iianges upon the base-plate andthe top plate or cap shown, as this may be modified Without departingfrom the spirit ot' my invention; or such iianges may be entirelyomitted and other equivalent devices employed in lieu thereof and stillbe within the scope of my invention. 1

I am aware that it is not new to rarrange a spiral volute coil within acylindrical coil, `the said volute coil being formed from a strip or rooyfrom strips of sheet or plate metal wound into proper shape, as shown,for instance, vin Let ters Patent No. 255,935, and such I do not claim;but,

Having fully described my invention,what I do claim, and desire tosecure by Letters Patent, is-

1. The combination, with a cylindrical Spiral coil, of a conical spiralcoil of substantially the same length as said cylindrical coil, arrangedwithin the same, whereby a spring is produced in which the conjointaction of a conical and a cylindrical spiral coil is secured during theentire range of movement of said spring, substantially as described.

2. rlhe combination7 with the outer cylindrical coil, A, the innerconical coil, B, and the base-plate E, of the top plate or cap, D,provided with a depending iiange projecting down between the upper endsof the coils, substantially as described.

The combination, with the outer cylindrical coil and the inner conicalcoil having its base constructed of a size to it'the interior of thecylindrical coil, of a base-plate upon which they both rest, and means'for holding the base of said conical coil from lateral movement upon thebase-plate, substantially as described.

4. The combination, with the outer cylindrical coil, A, and the innerconical coil, B,

having its base constructed of a size to snugly 3o fit the interior ofthe cylindrical coil, of the base-plate E, provided with theupwardlyprojecting flange b, which passes up into the interior of theconical coil and prevents it from moving laterally upon the saidbase-plate, 35

substantially as described.

5. The combination, with the outer cylindrical coil, A, the innerconical coil, B, having its base constructed of a size to fit theinterior of the cylindrical coil, and the base-plate E, 40

pending ange d,which projects down between 45 the upper ends of theouter and inner coils, substantially as described.

RICHARD VOSE.

Witnesses:

J oHN S. SILVER, B. S. CLARK.

